Is any one please tell me that what is robots.txt file??? and how we implement in my site?? Is it necessary for any site???
When a search engine crawler comes to your site, it will look for a special file on your site. That file is called robots.txt and it tells the search engine spider, which Web pages of your site should be indexed and which Web pages should be ignored. This is Called Robots.txt. Files
Robots.txt file is a set of instructions that tell search engine robots which pages of your site to be crawled and indexed. In most cases, your site is consist of many files or folders i.e. admin folders, cgi-bin, image folder, which are not relevant to the search engines. Robots.txt helps tell spiders what is useful and public for sharing in the search engine indexes and what is not. Robots.txt file is to improve site indexation by telling search engine crawler to only index your content pages and to ignore other pages (i.e. monthly archives, categories folders or your admin files) that you do not want them to appear on the search index. -------------------------------------------------- Ecommerce Website | Web Application Development
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Robots.txt is a text (not html) file you put on your root directory to tell search robots which files to ignore (or alternatively) which files to crawl. It also helps Search Engines to locate the Sitemap of the website and hence crawl the entire website in depth... helping in your rankings and traffic. Creating a robots.txt file is a matter of just a few seconds. - Right click on your desktop - Choose new - text document (you can use notepad too) - Insert instructions to crawling bots. - Save the document as robots.txt You may now upload this file to your top/ root directory e.g. http://yourdomainname/robots.txt
Robots.txt is a text (not html) file you put on your site to tell search robots which pages you would like them not to visit. Robots.txt is by no means mandatory for search engines but generally search engines obey what they are asked not to do. It is important to clarify that robots.txt is not a way from preventing search engines from crawling your site (i.e. it is not a firewall, or a kind of password protection) and the fact that you put a robots.txt file is something like putting a note “Please, do not enter†on an unlocked door – e.g. you cannot prevent thieves from coming in but the good guys will not open to door and enter. That is why we say that if you have really sen sitive data, it is too naïve to rely on robots.txt to protect it from being indexed and displayed in search results.